CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 3.8	$ 2.6
Accounts receivable—affiliate:
From contracts with customers	105.2	93.2
Other current assets	1.4	5.6
Total current assets	110.4	101.4
Equity investments	102.5	108.4
Property, plant and equipment, net	3,100.7	3,111.3
Long-term receivable—affiliate	0.9	0.9
Deferred tax asset	62.8	42.5
Other noncurrent assets	9.1	10.0
Total assets	3,386.4	3,374.5
Liabilities
Accounts payable—trade	21.5	30.0
Accounts payable—affiliate	22.3	21.0
Accrued liabilities	62.7	54.1
Current maturities of long-term debt	15.0	10.0
Other current liabilities	5.5	9.9
Total current liabilities	127.0	125.0
Long-term debt	1,817.3	1,900.1
Other noncurrent liabilities	23.5	23.4
Total liabilities	1,967.8	2,048.5
Partners' capital
Total partners' capital	184.0	125.0
Noncontrolling interest	1,234.6	1,201.0
Total partners' capital	1,418.6	1,326.0
Total liabilities and partners' capital	3,386.4	3,374.5
Class A Shares
Partners' capital
Common unitholders	184.0	125.0
Total partners' capital	$ 184.0	$ 125.0